The number of questions related to climate, pollution, mass extinction, threats from technology, are on a rise. How to understand our place within the environment, how to create a link between our economy and the environment, how to evaluate natural resources compared to market values? This book is seeking answers to the questions what sustainability means, what happens when our economy, our practice, our life, our political-economic establishment are unsustainable, if the reasonable and theoretically optimal use of resources does sum up to sustainability on the global scale, how technology affects sustainability, if there is anything missing from the Demand-Supply graph. My work intends to answer the less pronounced questions like how to make decisions if our way of life is sustainable or not; in case our answer is not, what we should take into consideration when we look for the way forward.